- A5
- B4
- C6
- D20
Step-by-Step Solution
Read the gaps: P every 90 s, Q every 120 s. Together every LCM s min: at 8:06, 8:12, 8:18, 8:24, 8:30, so 5 times. (20 is , the greens of P alone.)
Answer: A) 5
At a Bengaluru junction, the timeline shows when Light P and Light Q turn green; both turned green together at 8:00 am and keep the same gaps. How many MORE times will they turn green together after 8:00 am, up to and including 8:30 am?
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